English

Differential Puiseux theorem in generalized series fields of finite rank

Classical Analysis and ODEs 2011-08-19 v2

Abstract

We study differential equations F(y,...,y(n))=0F(y,...,y^{(n)})=0 where F(Y0,...,Yn)F(Y_0,...,Y_n) is a formal series in Y0,...,YnY_0,...,Y_n with coefficients in some field of \emph{generalized power series} \mathdsKr\mathds{K}_r with finite rank rNr\in\mathbb{N}^*. Our purpose is to understand the connection between the set of exponents of the coefficients of the equation SuppF\textrm{Supp} F and the set Suppy0\textrm{Supp} y_0 of exponents of the elements y0\mathdsKry_0\in\mathds{K}_r that are solutions.

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Cite

@article{arxiv.0902.1758,
  title  = {Differential Puiseux theorem in generalized series fields of finite rank},
  author = {Mickael Matusinski},
  journal= {arXiv preprint arXiv:0902.1758},
  year   = {2011}
}

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37 pages